Deciding on the correct foam insulation for under slab applications when specifying a project can be difficult. As a material that will affect the energy efficiency and overall insulation of a building, it’s important to choose something that’s suitable for the project. 

Ravatherm XPS is an extruded polystyrene insulation material that offers a great choice for under slab insulation for almost any domestic, industrial or commercial setting as it has a number of unique properties. In this article, we will explore the benefits of Ravatherm XPS and its use as under slab insulation. 

In this guide:


Why use Ravatherm XPS?

When specifying a foam for under slab insulation, Ravatherm XPS is an extruded polystyrene material that can offer an excellent solution to meet a huge range of needs. Ravatherm XPS has a number of properties that make it a great insulation material for a range of applications. 

It helps to save energy by preventing heat from escaping through the floor structure. This makes it a real investment for making savings in the utility costs associated with running a building of any type. Its rigid foam construction acts as a thermal break, providing vital thermal insulation and saving heat. 

A quarter of the heat from a building can be lost with many types of under slab insulation but Ravatherm helps to reduce this a huge amount, cutting costs and creating a more comfortable working or living environment.

Benefits of using Ravatherm XPS

Ravatherm XPS offers a range of benefits when used as under slab insulation. 

High compressive strength

Ravatherm XPS has high compressive strength, ideal for heavy-duty environments. It can also deliver high strength performance for the entire lifetime of the structure, with amazing performance throughout. 

Excellent thermal performance

Ravatherm XPS offers improved thermal insulation for a warmer space, retaining its initial insulation performance throughout its lifespan. Suitable for most flooring applications, it boasts a BREEAM Green Guide Rating A. 

Using closed-cell polystyrene, Ravatherm XPS under slab insulation offers incredible thermal insulation, meaning an increase in energy efficiency. This saves on energy bills and means that less heat is released from a building unnecessarily. 

Environmentally friendly

XPS insulation is more environmentally friendly than other types of insulation and can be recycled. Its age resistance means it shouldn’t need replacing for the entire span of the building’s life, saving on waste from installation to the end of its life. Ravatherm XPS X is made using carbon dioxide as the main blowing agent and has an Ozone Depletion Potential (ODP) of zero and a Global Warming Potential (GWP) of less than five.

Water resistance

The material is resistant to water absorption and frost, so it can suit a range of climates and prevents moisture absorption which can affect the strength and thermal performance of the floor insulation. 

Load-bearing performance

Suitable for highly loaded floors, it has superior load-bearing performance perfect for industrial spaces. Ravatherm XPS can be placed directly on prepared ground, reducing the need for laborious work beforehand.

Applications of Ravatherm XPS as under slab insulation

Ravatherm XPS under slab insulation has many applications. 

Warehouse and industrial environments

It can be used in warehouse and industrial environments due to its ability to bear high weights. Easily meeting the demands of storage racking and vehicle movement, it remains as sturdy and high performance as at the initial point of installation. 

Domestic Applications

As well as having heavy-duty uses, Ravatherm XPS can be used for domestic applications, providing the same energy and heat saving benefits as in industrial structures.

Ravatherm XPS options

When purchasing Ravatherm XPS under slab insulation, there are four grades available. So, whatever the loading needs of your project, they can be met. The grades include:

  • Domestic floors – Ravatherm XPS X 200 SB with compressive strength of 200 kPa
  • Domestic floors requiring sturdier insulation – Ravatherm XPS X 300 SB with compressive strength of 300 kPa
  • Commercial floors – Ravatherm XPS X 500 SB with compressive strength of 500 kPa
  • Cold stores or other heavy-duty spaces – Ravatherm XPS X 700 SV with compressive strength of 700 kPa

Why use Panel Systems as a supplier of Ravatherm XPS under slab insulation?

Panel Systems is a recognised distributor of Ravatherm XPS and can offer a range of services in relation to the material. 

In-house CNC machining service

With an in-house CNC machining service, we have the ability to handle bespoke projects. Whether you require insulation for a domestic property, commercial premises or in an industrial setting, Panel Systems can supply the materials and cutting service. 

Ability to cater for bespoke projects

We’re able to take on large projects and can support your project at every step of the way, from finding out exactly what your project requires through to the supply process. 

Reliability of service

Boasting an extensive record of excellent supply partnerships, we offer incredible reliability and can deliver our products both in the UK and worldwide. 

With a large team of staff including production operatives, customer service specialists, CAD designers and logistics experts, there is always someone on-hand to deliver whatever you need, on time and with expert support. 

Before specifying the use of Ravatherm XPS for your chosen application, please consult the manufacturers information and data sheets which can be found here.

Please contact our team to find out more about Ravatherm XPS under slab insulation and how it could benefit your project.